<!DOCTYPE html>
<link rel="stylesheet" href="test-common.css">
<style type="text/css">
  @counter-style a {
    system: extends upper-roman;
    prefix: "Chapter ";
    range: 1 5;
  }
  @counter-style b {
    system: extends a;
    prefix: "Section ";
    range: 1 6;
  }
</style>
<ol start="-2" style="list-style-type: a">
  <li><li><li><li><li>
  <li><li><li><li><li>
</ol>
<ol start="-2" style="list-style-type: b">
  <li><li><li><li><li>
  <li><li><li><li><li>
</ol>
